〈110〉轴向取向Fe83Ga17合金中原子间作用与磁致伸缩的关系

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【摘要】

：

采用定向凝固的方法制备出棒状〈110〉轴向取向多晶Fe83Ga17样品,Fe83Ga17合金样品经过淬火处理后,饱和磁致伸缩应变λs可以达到2.42×10-4.实验发现样品的磁致伸缩应变与合

【作者】

：

韩志勇张茂才高学绪乔档周寿增

【机构】

：

北京科技大学

【出处】

：

功能材料

【发表日期】

：

2004年期

【关键词】

：

Fe-Ga合金磁致伸缩偶极相互作用

【基金项目】

：

国家自然科学基金;

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采用定向凝固的方法制备出棒状〈110〉轴向取向多晶Fe83Ga17样品,Fe83Ga17合金样品经过淬火处理后,饱和磁致伸缩应变λs可以达到2.42×10-4.实验发现样品的磁致伸缩应变与合金中的短程序密切相关.淬火处理后样品的磁性Fe原子周围的原子占位发生了改变,合金部分有序.文中采用"原子对模型"(pair model),从能量最小原理出发,分析讨论了Fe-Ga合金中原子对间的相互作用与磁致伸缩应变的关系.

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〈110〉轴向取向Fe83Ga17合金中原子间作用与磁致伸缩的关系

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